I've got 3 corals, actually. Small ones. And if I find I need a calcium reactor, I'll get a calcium reactor. But soft corals aren't as demanding for calcium so I'll probably be fine with dosing kalk, once I get enough to worry about it anyway.
Damn, I forgot to add the price of my skimmer, bump that $5 up to $7. If you want to talk the new, retail price for everything, make it somewhere around $15.60/liter.